<template>
  <div id="app" name="app">
    <el-container>
      <!-- 顶部导航栏 -->
      <div class="topbar">
        <div class="nav">
          <ul>
            <li v-if="!$store.state.user">
              <el-button type="text" @click="login">登录</el-button>
              <span class="sep">|</span>
              <el-button type="text" @click="onRegister">注册</el-button>
            </li>
            <li v-else>
              欢迎
              <el-popover
                  width="160"
                  v-model="logoutVisible">
                  <p>确定退出登录吗？</p>
                  <div style="text-align: right; margin: 0">
                      <el-button size="mini" type="text" @click="logoutVisible = false">取消</el-button>
                      <el-button type="primary" size="mini"  @click="logout">确定</el-button>
                  </div>
                  <el-button slot="reference" type="text">{{ userName }}</el-button>
              </el-popover>
            </li>
            <li>
              <router-link to="/order">我的订单</router-link>
            </li>
            <li>
              <router-link to="/collect">我的收藏</router-link>
            </li>
            <li>
              <router-link to="/shoppingCart">
                <i class="el-icon-shopping-cart-full"></i> 购物车
                <span class="num">({{getNum}})</span>
              </router-link>
            </li>
          </ul>
        </div>
      </div>
      <!-- 顶部导航栏END -->

      <!-- 顶栏容器 -->
      <el-header>
        <el-menu
          :default-active="activeIndex"
          class="el-menu-demo"
          mode="horizontal"
          active-text-color="#409eff"
          router
        >
          <div class="logo">
            <router-link to="/">
              <img src="./assets/imgs/logo.png" alt />
            </router-link>
          </div>
          <el-menu-item index="/">首页</el-menu-item>
          <el-menu-item index="/goods">全部商品</el-menu-item>
          <el-menu-item index="/about">关于我们</el-menu-item>

          <div class="so">
            <el-input placeholder="请输入搜索内容" v-model="search">
              <el-button slot="append" icon="el-icon-search" @click="searchClick"></el-button>
            </el-input>
          </div>
        </el-menu>
      </el-header>
      <!-- 顶栏容器END -->

      <!-- 主要区域容器 -->
      <el-main>
        <keep-alive>
          <router-view></router-view>
        </keep-alive>
      </el-main>
      <!-- 主要区域容器END -->

      <!-- 底栏容器 -->
      <el-footer>
        <div class="footer">
          <div class="ng-promise-box">
            <div class="ng-promise">
              <p class="text">
                <a class="icon1" href="javascript:;">7天无理由退换货</a>
                <a class="icon2" href="javascript:;">满99元全场免邮</a>
                <a class="icon3" style="margin-right: 0" href="javascript:;">100%品质保证</a>
              </p>
            </div>
          </div>
          <div class="github">
              <div class="github-but"></div>
          </div>
          <div class="mod_help">
            <p>
              <router-link to="/">首页</router-link>
              <span>|</span>
              <router-link to="/goods">全部商品</router-link>
              <span>|</span>
              <router-link to="/about">关于我们</router-link>
            </p>
            <p class="coty">商城版权所有 &copy; 2012-2021</p>
          </div>
        </div>
      </el-footer>
      <!-- 底栏容器END -->
    </el-container>
    <!-- 注册的组件 -->
    <register ref="register"></register>

    <!-- 登录的组件 -->
    <login ref="login"></login>
  </div>
</template>

<script>
import Register from "./components/Register";
import shoppingCartAPI from "./utils/api/shoppingCartAPI";
import { mapGetters, mapActions, mapMutations } from "vuex";
export default {
  components: {
    Register
  },
  beforeUpdate() {
    this.activeIndex = this.$route.path;
  },
  created() {
    let userInfo = window.localStorage.getItem("user");
    if (userInfo) {
      this.setUser(JSON.parse(userInfo));
    }
  },
  computed: {
    ...mapGetters(["userInfo", "userName"])
  },
  watch: {
    userInfo(value) {
      if (value) {
        this.getShoppingCart(value.user_id);
      }
    }
  },
  data() {
    return {
      activeIndex: "", // 头部导航栏选中的标签
      search: "", // 搜索条件
      getNum: 0, //购物车数量
      logoutVisible: false //退出登录的弹窗
    };
  },
  methods: {
    ...mapMutations(["setUser", "setShowLogin"]),
    // 点击搜索按钮
    searchClick() {
      if (this.search != "") {
        // 跳转到全部商品页面,并传递搜索条件
        let searchStr = this.search.trim();
        this.search = "";
        if (!searchStr) return;
        this.$router.push({
          path: "/goods",
          query: {
            search: searchStr
          }
        });
      }
    },

    //点击注册
    onRegister() {
      this.$refs.register.showRegister();
    },

    //点击登录
    login() {
      this.setShowLogin(true);
    },

    //获取购物车信息
    async getShoppingCart(userId) {
      let { data: res } = await shoppingCartAPI.getShoppingCart({
        user_id: userId
      });
      
      if (res.code !== "001") {
        //可能cookie过期
        //清空本地登录信息
        window.localStorage.clear();
        //清空vuex中的用信息
        this.setUser(null);
        //提示用户重新登录
        this.$notifyError(res.msg);
      } else {
        res.shoppingCartData.forEach(item => {
          this.getNum += item.num;
        });
      }
    },
    //点击退出登录
    logout() {
      this.logoutVisible = false; //让退出登录提示框隐藏
      //清除vuex中的用户信息
      this.setUser(null);
      //清除localStorage中的信息
      window.localStorage.clear();
      this.$notifySuccess("成功退出登录");
      //清空页面中的购物车信息
      this.getNum = 0;
    }
  }
};
</script>

<style>
/* 全局CSS */
* {
  padding: 0;
  margin: 0;
  border: 0;
  list-style: none;
}
#app .el-header {
  padding: 0;
}
#app .el-main {
  min-height: 300px;
  padding: 20px 0;
}
#app .el-footer {
  padding: 0;
}
a,
a:hover {
  text-decoration: none;
}
/* 全局CSS END */

/* 顶部导航栏CSS */
.topbar {
  height: 40px;
  background-color: #3d3d3d;
  margin-bottom: 20px;
}
.topbar .nav {
  width: 1225px;
  margin: 0 auto;
}
.topbar .nav ul {
  float: right;
}
.topbar .nav li {
  float: left;
  height: 40px;
  color: #b0b0b0;
  font-size: 14px;
  text-align: center;
  line-height: 40px;
  margin-left: 20px;
}
.topbar .nav .sep {
  color: #b0b0b0;
  font-size: 12px;
  margin: 0 5px;
}
.topbar .nav li .el-button {
  color: #b0b0b0;
}
.topbar .nav .el-button:hover {
  color: #fff;
}
.topbar .nav li a {
  color: #b0b0b0;
}
.topbar .nav a:hover {
  color: #fff;
}
.topbar .nav .shopCart {
  width: 120px;
  background: #424242;
}
.topbar .nav .shopCart:hover {
  background: #fff;
}
.topbar .nav .shopCart:hover a {
  color: #ff6700;
}
.topbar .nav .shopCart-full {
  width: 120px;
  background: #ff6700;
}
.topbar .nav .shopCart-full a {
  color: white;
}
/* 顶部导航栏CSS END */

/* 顶栏容器CSS */
.el-header .el-menu {
  max-width: 1225px;
  margin: 0 auto;
}
.el-header .logo {
  height: 60px;
  width: 189px;
  float: left;
  margin-right: 100px;
}
.el-header .so {
  margin-top: 10px;
  width: 300px;
  float: right;
}
/* 顶栏容器CSS END */

/* 底栏容器CSS */
.footer {
  width: 100%;
  text-align: center;
  background: #2f2f2f;
  padding-bottom: 20px;
}
.footer .ng-promise-box {
  border-bottom: 1px solid #3d3d3d;
  line-height: 145px;
}
.footer .ng-promise-box {
  margin: 0 auto;
  border-bottom: 1px solid #3d3d3d;
  line-height: 145px;
}
.footer .ng-promise-box .ng-promise p a {
  color: #fff;
  font-size: 20px;
  margin-right: 210px;
  padding-left: 44px;
  height: 40px;
  display: inline-block;
  line-height: 40px;
  text-decoration: none;
  background: url("./assets/imgs/us-icon.png") no-repeat left 0;
}
.footer .github {
  height: 50px;
  line-height: 50px;
  margin-top: 20px;
}
.footer .github .github-but {
  width: 50px;
  height: 50px;
  margin: 0 auto;
  background: url("./assets/imgs/github.png") no-repeat;
}
.footer .mod_help {
  text-align: center;
  color: #888888;
}
.footer .mod_help p {
  margin: 20px 0 16px 0;
}

.footer .mod_help p a {
  color: #888888;
  text-decoration: none;
}
.footer .mod_help p a:hover {
  color: #fff;
}
.footer .mod_help p span {
  padding: 0 22px;
}
/* 底栏容器CSS END */
</style>